| pentamer | See: virion. Origin: penta-+ G. Meros, part (05 Mar 2000) |
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| pentamera | <zoology> An extensive division of Coleoptera, including those that normally have five-jointed tarsi. It embraces about half of all the known species of the Coleoptera. Origin: NL. See Pentamerous. Source: Websters Dictionary (01 Mar 1998) |
| pentameran | <zoology> One of the Pentamera. Source: Websters Dictionary (01 Mar 1998) |
| pentamerous | Of a flower, having five parts in each floral whorl (not necessarily including the gynoecium). (09 Oct 1997) |
| pentamerus | <paleontology> A genus of extinct Paleozoic brachiopods, often very abundant in the Upper Silurian. <geology> Pentamerus limestone, a Silurian limestone composed largely of the shells of Pentamerus. Origin: NL. See Pentamerous. Source: Websters Dictionary (01 Mar 1998) |
| pentamethonium bromide | Pentamethylene-bis[trimethylammonium bromide];a ganglionic blocking agent with the same antihypertensive use as hexamethonium chloride. (05 Mar 2000) |
| pentamethylene | <chemistry> A hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene. Origin: Penta- + methylene. Source: Websters Dictionary (01 Mar 1998) |
| pentamidine | <drug> An antibiotic used in aerosol form as a prevention against PCP (aerosolised pentamidine) and used intravenously to treat PCP. Side effects of inhaled pentamidine can include coughing, lung contractions, shortness of breath and fatigue. Side effects of injected pentamidine can include low blood sugar, pancreatitis and kidney disease. (09 Oct 1997) |
| pentamidine isethionate | P,p'-(Pentamethylenedioxy)dibenzamidinebis(beta-hydroxyethanesulfonate);a toxic but effective drug used in the prophylaxis and treatment of early stages of both types of African sleeping sickness (Gambian and Rhodesian trypanosomiasis). It does not cross the blood-brain barrier and is not effective in the treatment of the advanced (neurological) stage of the disease. Also used to treat leishmaniasis that does not respond to therapy with pentavalent antimonials and in the treatment of pneumonia caused by Pneumocystis carinii. (05 Mar 2000) |